#ifndef __USART3_H
#define __USART3_H	
#include "stm32f10x.h"
#include "main.h"    

extern volatile u8 R_buf[50];		
extern volatile u8 flag;


void  USART3_Config(uint32_t baud);
void usart3_send_byte(u8 *pbuf, u8 len);

#endif













